19978695

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{40361}}^1$

素因数の和:40383

約数の個数: 24

約数和(自身を含む): 37778832

約数和(自身を除く): 17800137

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 495, 40361, 121083, 201805, 363249, 443971, 605415, 1331913, 1816245, 2219855, 3995739, 6659565, 19978695]

約数ペア:

[(1, 19978695), (3, 6659565), (5, 3995739), (9, 2219855), (11, 1816245), (15, 1331913), (33, 605415), (45, 443971), (55, 363249), (99, 201805), (165, 121083), (495, 40361)]